Matthew Walsh comments

I've heard the policy is not to open a homicide investigation unless it's fairly obvious who the perpetrator is. This is the reason the statistics for crimes solved look so good. Man hours too would be spent more efficiently I suppose.

I know what you mean for sure, but if you think of how some people react to noticeable differences in other countries including the U.S., it might give you perspective and compassion for what might have been an innocent thing. People always say to folks with almond eyes "where are you from?" even after the conversation has been going a while in obviously native English.